Martin Wood Complex, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU
Terry Rudolph (Imperial)
Abstract quantum information doesn’t care about the physical system into which it is encoded. Practically, however, there are considerable differences between using matter-based quantum information (e.g. atoms, ions, dots, NV centers, spins, superconducting qubits) versus photons as the physical carriers of the quantum information. I will first overview how photons can be used to efficiently build a robust, fault-tolerant, quantum computer, even though - unlike matter qubits - they do not interact. In the light (!) of these results I will then discuss some interesting features they reveal about photonic entanglement more generally. Finally I will show some of the engineering progress towards building a large-scale photonic quantum computer.